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The information of the information paradox: On the quantum information meaning of Page curve

Page curve for the fine grained entropy of the black hole radiation is obtained once we include the effect of a non vanishing quantum Fisher information in the evaporation data. This quantum Fisher information scales as the inverse of the original black hole entropy. The modified fine grained entropy can be naturally related to a relative entanglement entropy with the quantum Fisher information defining the curvature at Page point.

preprint2020arXivOpen access
Cesar Gomez
hep-th
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Cesar Gomez

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